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Institutional Investment Manager
WESTFIELD CAPITAL MANAGEMENT CO LP
WESTFIELD CAPITAL MANAGEMENT CO LP (CIK: 0001177719) incorporated in Delaware, located at One Financial Center, Boston, MA. Institutional holdings reported to the SEC.

Institutional Holdings (2016Q4)
Portfolio Summary: 253 holdings with a total value of $11,405,054,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 APPLE INC 2,259,452 261,690,000 2.29%
2 MICROSOFT CORP 3,462,649 215,169,000 1.89%
3 FACEBOOK INC 1,566,739 180,253,000 1.58%
4 CELGENE CORP 1,442,768 167,000,000 1.46%
5 VISA INC 2,135,938 166,646,000 1.46%
6 STERIS PLC SHS USD 2,439,037 164,367,000 1.44%
7 ALPHABET INC 204,276 161,879,000 1.42%
8 ALPHABET INC 204,903 158,148,000 1.39%
9 AMAZON COM INC 210,628 157,944,000 1.38%
10 SALESFORCE COM INC 2,270,923 155,467,000 1.36%
11 UNITED CONTINENTAL H 2,095,511 152,721,000 1.34%
12 DOW CHEM CO 2,667,564 152,638,000 1.34%
13 MARRIOTT INTL 1,762,085 145,689,000 1.28%
14 BRISTOL MYERS SQUIBB CO 2,411,405 140,923,000 1.24%
15 JAZZ PHARMACEUTICALS PLC SHS USD 1,259,389 137,311,000 1.20%
16 NEWELL BRANDS 2,971,490 132,677,000 1.16%
17 UNION PAC CORP 1,278,910 132,597,000 1.16%
18 METTLER-TOLEDO 311,446 130,359,000 1.14%
19 CHARTER COMM 438,133 126,147,000 1.11%
20 SERVICENOW INC 1,690,520 125,673,000 1.10%
21 ABBOTT LABS 3,132,392 120,315,000 1.05%
22 CELANESE 1,460,954 115,036,000 1.01%
23 MCDONALDS CORP 925,379 112,637,000 0.99%
24 VAIL RESORTS INC 695,407 112,176,000 0.98%
25 AMETEK 2,292,483 111,415,000 0.98%
26 CONSTELLATION BRANDS INC 701,622 107,566,000 0.94%
27 GILEAD SCIENCES INC 1,401,979 100,396,000 0.88%
28 UNITED PARCEL SERVICE INC 867,751 99,479,000 0.87%
29 UNITEDHEALTH GROUP INC 600,425 96,092,000 0.84%
30 TJX COS INC NEW 1,261,909 94,807,000 0.83%
31 CME GROUP INC 821,295 94,736,000 0.83%
32 JB HUNT TRANSPORT 925,636 89,851,000 0.79%
33 CHUBB LIMITED 663,586 87,673,000 0.77%
34 INTEL CORP 2,373,440 86,085,000 0.75%
35 DISNEY WALT CO 819,064 85,363,000 0.75%
36 LENNOX INTL INC 547,310 83,831,000 0.74%
37 COOPER COS INC 478,506 83,705,000 0.73%
38 GENERAL ELECTRIC CO 2,635,248 83,274,000 0.73%
39 PAYPAL HLDGS INC 2,102,667 82,992,000 0.73%
40 MIDDLEBY CORP 638,125 82,197,000 0.72%
41 PALO ALTO NETWORKS 651,090 81,419,000 0.71%
42 ON SEMICONDUCTOR CORP 6,377,822 81,381,000 0.71%
43 NIELSEN HLDGS PLC 1,898,216 79,630,000 0.70%
44 DANAHER CORP DEL 1,008,645 78,513,000 0.69%
45 LKQ CORP 2,518,002 77,177,000 0.68%
46 TRANSDIGM GROUP INC COM 306,976 76,425,000 0.67%
47 HD Supply Holdings Inc 1,763,617 74,971,000 0.66%
48 BERRY PLASTICS GROUP INC 1,533,485 74,727,000 0.66%
49 NEXSTAR MEDIA GROUP INC 1,169,661 74,040,000 0.65%
50 SYNCHRONY FINL 1,996,209 72,403,000 0.63%
Page 1 of 6

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001085146-17-000444, filed 2017.02.10).

From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.